2667557671 has 2 divisors, whose sum is σ = 2667557672. Its totient is φ = 2667557670.

The previous prime is 2667557653. The next prime is 2667557677. The reversal of 2667557671 is 1767557662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2667557671 - 2¹¹ = 2667555623 is a prime.

It is a super-2 number, since 2×2667557671² = 14231727856221888482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2667557677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333778835 + 1333778836.

It is an arithmetic number, because the mean of its divisors is an integer number (1333778836).

Almost surely, 2^2667557671 is an apocalyptic number.

2667557671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667557671 is an equidigital number, since it uses as much as digits as its factorization.

2667557671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 52.

The square root of 2667557671 is about 51648.4043412766. The cubic root of 2667557671 is about 1386.8769784778.

Subtracting from 2667557671 its reverse (1767557662), we obtain a palindrome (900000009).

The spelling of 2667557671 in words is "two billion, six hundred sixty-seven million, five hundred fifty-seven thousand, six hundred seventy-one".